Don't take the quality of your tap water for granted. If you draw your water from a well, nature may not be providing you the perfect balance. If you are using tap water from your municipal department, it likely includes minerals and additives.

Serious hobbyists know that the best way to measure the salinity and specific gravity of aquarium water is to use a refractometer. These precision optical instruments are incredibly accurate even at very low salt levels, and are equally easy to use.

Testing your water parameters is an important method of foreseeing problems in your aquatic ecosystem before they result in catastrophe. Luckily, tools that were once only accessible (and affordable) to advanced hobbyists have since become simpler.

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Salifert Nitrate Test Kit 60 Tests
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Better than others on the market I have used
Most water test kits are pretty similar brand to brand, but not NO3 tests. I've previously used 2 other NO3 test products with little luck. One was a test strip that was impossible to read. The other, a 2-liquid test always seemed to read quite high compared to my local pet store's water analysis and was very difficult to tell the difference between the various values.
This product works great. It's not only easy to match values with the color card, but even to interpolate between values. The dual range is nice too -- no need to dilute and retest.
January 28, 2015

Easy to use
Accurate and it doesn't give false readings due to "amine interference"I won't use anything else
January 20, 2015

Excellent
I only use Salifert test kits. They are easy to use, and very accurate.I would recommend their test kits for everyone.
September 10, 2013

Easy test
This is a good easy test to use and read. The only down fall is trying to level the powder on the little spoon. Not that big of a deal.
September 7, 2013